Rowan Williams, former Archbishop of Canterbury, has joined over two dozen faith leaders urging Keir Starmer to back the Climate and Nature (CAN) Bill. The bill, set for a parliamentary vote on 24 January, seeks stronger environmental protections and accelerated carbon reduction targets. Over 200 MPs have already expressed support. In an open letter organised by the campaign group Zero Hour, the faith leaders appealed to the government to act responsibly, citing the 'golden rule' shared by all faiths: treat others as you wish to be treated. They emphasised Britain’s responsibility to address the global impacts of its actions. The letter described the CAN Bill as essential for improving lives in the UK and globally. It called on the Government to demonstrate leadership by integrating climate and nature action into its policies and setting an example for the world. The letter, delivered to Downing Street, urged seizing this moment as an opportunity for meaningful change.